Controller output changes from 0.5 to 0.8, when connecting to load

britto:
No Grumpy, it is completely different.

If it is;
Please read the first post in any forum entitled how to use this forum.
http://forum.arduino.cc/index.php/topic,148850.0.html
Can you please post a copy of your circuit, in CAD or a picture of a hand drawn circuit in jpg, png?
Please include your power supply and label components and pins.
Thanks.. Tom... :slight_smile: